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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,558

I have made a Derivative Plotter

It plots the "derivative" by simply calculating successive points and working out the slope. I can't think of a simple phrase to say that ... "calculated slope"?

But a really cool feature is at the bottom where you get to plot a function in green to (hopefully) coincide with the "calculated slope".

Comments and Suggestions pretty please!

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 91,485

Hi MIF;

It works well even getting the correct plot for this tough one.

You could have calculated those points using a formula instead of the slope between two points. But if the speed is acceptable that way, why change?

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 15,364

Hi MathsIsFun,

The *Derivative Plotter* is neat. Excellent work!

Character is who you are when no one is looking.

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,647

hi MathsIsFun

That's great and worked well for all I tried.

There was one odd thing that happened. I suspect it's my laptop as I've had the odd thing happen with graphics before. But I'll describe what happened anyway, in case you can shed any light.

If I slide the zoom control fully left, as I start to slide back towards the centre, the graphs (everything inside the function and the slope borders) vanish. And stays that way unless I press the reset. This doesn't happen for a slide right.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,558

Sounds like a glitch in the program ... will investigate, thanks.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,558

New version 0.6, only minor changes, hopefully fixed the zoom bug that Bob found. (Use refresh!)

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,796

The graph of tan(sin(tan(cos(tan(x)))) and its derivative look cool!

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 91,485

Hi;

e^(sin(x)) makes nice waves.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

**Online**

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,647

Yes, it has fixed the zoom. Thanks.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,558

Excellent.

e^(sin(x)) is quite nice to scroll back and forth on

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,796

Larger plot boxes and panning functionality would be nice...

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,558

You can pan by single click (re-centers image)

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 15,796

When I left click it gives me the selection tool so that when I let go of the mouse, it zooms into the area I selected.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**Shrikharan****Member**- Registered: 2013-04-01
- Posts: 1

I am unable to use the derivative plotter offline. I copied the swf file from temporary internet file folder and tried to play it but only blank screen. Any ideas

Thanks

Shri

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